Magnetic moments A CLASSIC experiment beloved of scientifically inclined children is to cover a magnet with a piece of paper and sprinkle iron filings onto the paper. This reveals the field lines that connect the magnet’s north and south poles. Try something similar with some of the new types of magnets now being made using […]

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Paul Markillie is Innovation Editor of The Economist. He specialises in writing about emerging and disruptive technologies. His special report “The Third Industrial Revolution” was published by The Economist in 2012 as a cover story and attracted international interest. Other more recent reports include "Knit me a car", a special report on new materials in manufacturing. His previous special reports have included carmaking, aerospace and logistics. Paul was The Economist’s first Asian Business Correspondent, based in Hong Kong, and also served as Asia Editor.